By Sidney A. Gauthreaux
Animal Migration, Orientation, and Navigation provides some of the points of animal migration, together with the evolution of migration, climatic and meteorological impacts, and bioenergetics. This ebook discusses the physiological regulate, sensory platforms, orientation and navigation, and organic clocks and phenology facets of animal migration.
Organized into 5 chapters, this publication starts off with an summary of the migration recommendations of animals within the context of an area continuum. this article then explains the impression of brief- and long term climatic cycles at the spectrum of migratory styles in nature. different chapters examine the lively standards of other migration thoughts and the power shops of the migrants. This publication discusses besides the physiological foundation of animal migration, with emphasis on endocrinal findings at the timing and vigorous points of alternative migration thoughts. the ultimate bankruptcy bargains with the mechanisms utilized in course discovering by means of migrating animals.
This publication is a useful source for biologists and ecologists.
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Extra resources for Animal Migration, Orientation and Navigation
Fasciatus in its migration-reproduction pattern (Fuseini and Kumar, 1975) as is D. bimaculatus in Central America (Derr, 1977). Dysdercus cardinalis is apparently more similar to the other two species. Feeding in all species causes muscle histolysis and in D. intermedius mating does also even in starved females (Edwards, 1969). The ecology of these species with respect to the variation present would be worth further study. A relation between habitat and flight muscle development is also evident in the aquatic Corixidae (Hemiptera).
Shad do not feed in fresh 1. Ecology and Evolution of Migration 45 water, may lose up to 5 0 % of their body weight in spawning runs, and may suffer high postspawning mortality; less than 1 0 % are repeat spawners. Mortality is even higher late in the season with warmer water (Leggett, 1972). Migration at lower temperatures also assures optimal temperatures later for developing eggs and young (Leggett, 1976). Shad apparently home to their natal streams by a combination of olfac tory and rheotactic mechanisms (Dodson and Leggett, 1974) permitting return to the tributary of birth.
Vittatus swallows prey whole) and therefore live in open water. Jackson further argues that migration into rivers is an extension of 1. Ecology and Evolution of Migration 41 lakeshore movement also evolving as a result of predation pressure and the need for protection of young in specific substrates. In contrast Whitehead (1959) and Corbet (1961) argue that river spawning species were originally riverine and moved into lakes as an extension of downstream feeding movements (known from other populations and species).